Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '516d09e64f5c3f2e71327751259eccdc1866aa19c3f208c8e2590145181dd52d' 
  AND token = 'YLByax42fl9U3FcJVBTYZ24ilfp1YkmPIfWWz9bxfS4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}